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Far Infrared Reflection Spectra of Ba(Zn,Ta)O 3 ‐BaZrO 3 Dielectric Resonator Material
Author(s) -
WAKINO KIKUO,
MURATA MICHIHIRO,
TAMURA HIROSKI
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb04689.x
Subject(s) - analytical chemistry (journal) , materials science , dielectric , infrared , spectral line , infrared spectroscopy , lattice constant , dispersion (optics) , microwave , optics , chemistry , diffraction , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics , astronomy
The dielectric ceramic materiala Ba(Zn 1/3 Ta 2/3 )O 3 –BaZrO 3 has extremely low dielectric loss at microwave frequencies. To investigate the lattice vibrations of Ba(Zn,Ta)O 3 and Ba(Zr, Zn, Ta)O 3 solid solutions, far infrared reflection spectra were measured from 50 to 4000 cm −1 using a Fourier transform infrared spectrometer. These data were analyzed according to the classical dispersion theory. The spectra of Ba(Zn,Ta)O 3 are well fitted by using the 14 resonant modes, and the spectra of Ba(Zr, Zn, Ta)O 3 solid solution are fitted by assuming the normal distribution on resonant frequencies. The damping constant of these materials is discussed, and the values of tan δ calculated from the dispersion parameters agree with the measured values.